<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="root">
    <!--遍历数组-->
    <button @click.once="add">添加一个老刘</button>
    <h2>人员列表</h2>
    <button @click="updateMei">更新马冬梅</button>
    <ul>
        <li v-for="(p,index) in persons" :key="p.id">
            {{p.name}}-{{p.age}}-{{p.sex}}

        </li>

    </ul>


</div>
<script src="../js/vue.js"></script>
<script>
    Vue.config.productionTip = false//阻止vue启动时产生提示
    new Vue({
        el: "#root",
        data: {
            persons: [
                {id: '001', name: '马冬梅', age: 30, sex: "女"},
                {id: '002', name: '周冬雨', age: 20, sex: "女"},
                {id: '003', name: '周杰伦', age: 21, sex: "男"},
                {id: '004', name: '温兆伦', age: 22, sex: "男"}
            ],
        },
        methods:{
            updateMei(){
                /*this.persons[0].name='马老师',
                this.persons[0].age=19,
                this.persons[0].sex='男'*/
                this.persons[0]={id: '001',name: "马老师",age: 19,sex: '男'}
            }
        }
    })


</script>

</body>
</html>